Journal-bearing.



No. 722,427.' PATENTED MAR. 10, 1903. A. M. KERR.

JOURNAL BEARING.

APPLIOATIOH FILED SEPT. 11, 1902.

H0 MODEL. 2 SHEETS-SHEET 1.

fly am ji/gorizqyi li l A/easss 6 PATENTED MAR. 10, 1903. A. M. KERR.

JOURNAL BEARING.

APPLICATION Hum SEPT. 11, 1902.

2 SHEETS-SHEET 2.

H0 MODEL.

2o sectional view through the same.

UNITED STATES" PATENT OFFICE.

ALEXANDER M. KERR, OF DETROIT, MIOHIGAN, ASSIGNOR OF ONE-HALF TO HERBERT H. HEWITT, OF BUFFALO, NEW YORK.

JOURNAL-BEARING.

SPECIFICATION formingpart of Letters Patent No. 722,427, dated March 10, 1903.

Application filed September 11,1902. Serial No. 122,918. (No model.)

: pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to an improvement in journal-bearings shown in the accompanying I drawings and more particularly set forth in the following specification and claims.

In the drawings, Figure 1 is a vertical longitudinal section through the bearing, the equalizing-plate, and key. Fig. 2 is a cross- Fig. 3 is a plan view of the equalizer. Fig. 4 is a longitudinal section through the j ournal-bearing.

One object of my invention is to provide means to lessen the shoulder-pressure of the 2 5 journal on the bearing, which is well known to be largely the cause of heating the journal due to the end thrust on the bearing.

Another object of my invention is to provide means for equalizing the pressure be- 0 tween the bearing and the key, so as to in- 3 5 tion in the angle of the journal.

Referring to the letters of reference shown on the drawings, A is the journal and B the brass or bearing provided on its upper side with a concave, convex, or wedge shape sur-- 4o face.

B is the Babbitt or antifriction metal commonly employed on the face of the'brass.

C is an equalizing-plate, its upper and lower surfaces being concave, convex, or wedge shape to conform to the opposing faces of the bearing B and the key D.

d represents lugs cast integral with the key, and c c are ears formed on each side of the equalizing-plate and provided with elon- These lugs are then rivet-headed for the purpose of loosely engaging the equalizing-plate with the key. By permitting lateral movement between the bearing, equalizing-plate,

and key the tendency to heat the journal, due

to theshoulder-pressure of the axle on the end of the bearing, is reduced to the minimum.

The operation of the parts will be readily understood. When the movement of the car causes a variation in the angle of the journal, the pressure 'of the bearing on the equalizingplate at one end moves the equalizing-plate laterally, crowding it into a position Where the pressure between the journal and the key is equal. It is of course apparent that like results will be obtained whether the upper surface of thebearing and the complementary parts are either concave, convex, or in the form of a double wedge, and I would have it distinctly understood that I contemplate the employment of either the suggested forms. The curvature or angle may be more or less as the requirements of the case demand. The greater the curvature or angle the less travel required. It will also be noted thatthe lateral motion provided between the parts compensates for any defective alinement found between the axle-box and journal.

While I have described my invention for convenience as a car-axle bearing, it is apparent that it is equally well adapted for any journal-bearing in which the nature of its employment makes it advantageous to provide means for equalizing the pressure between the journal-bearing and adjacent parts.

Having thus described my invention, what I claim is 1. The combination of a brass, a key provided on each side with depending lugs adapted to loosely engage a filling-piece interposed between the brass and key, and the filling-piece'provided with ears having elongated slots to receive the depending lugs, the construction being such that said fillingpiece is free to move endwise to equalize the pressure on the several parts, substantially as described.

2. In a journal-bearing, the combination of 5o gated slots 0, through which the lugs 01 pass. a brass having a convex upper face, a key having a convex lower face, and. a fillingpiece interposed between the brass and key, its faces being complementary to those of the brass and key, the construction being such as to adapt it to move endwise to equalize the pressure on the several parts, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

ALEXANDER M. KERR.

Witnesses:

S. E. THOMAS, O. H. ELIOT. 

